Scale.



I. CHARET.

SCALE.

APPLICATION FILED AUG-.15, 1912.

Patented Nov. 11, 1913.-

3 SHEETS-SHEET 1.

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I. GHARET.

SCALE. APPLICATION FILED AUG.15, 1912.

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SCALE.

APPLICATION FILED AUG. 15, 1912.

Patented Nov. 11, 1913.

,3 SHEETS-SHEET 3.

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ISRAEL CHARET, or new YORK, N. Y.

SCALE;

Specification of Letters Patent.

Application filed August 15, 1912. SeriaLN o. 715,185.

Patented Nov. 11, 1913.

To all whom, it may concern:

Be it known that I, ISRAEL OHARET, a subject of the Czar of Russia, and a resident of, the cit of New York, borough of Brooklyn, inthe county of Kings and State of New York, have invented a new and Improved Scale, of which the following is a full, clear, and exact description.

This invention-relatesgenerally to scales, and, more particularly, it is directed to a combination of levers co-acting with the platform and suitable indicating mechanism, whereby the load on the platform may be indicated by the said mechanism.-

The principal object of my invention is to provide a new and improved means of mounting the scale platform, the construction being characterized by the adjustability of the parts, whereby the fulcrum may be varied in order to vary the effects of differ ent loads on indicating. mechanism used therewith.

More particularly, the construction comprehends an arrangement of parts adapted for use with the scale head shown and described in my co-pending application, Serial No. 668,283, filed December 28, 1911.

The construction -to be described and claimed comprehends a plurality of levers which are termed primary and secondary levers, movably mounted in position and in co-active relation, the mounting being characterized by the use of knife edges, whereby the centers of movement of moving parts remain fixed, thereby tending to greater accuracy and also to less wear and tear because the engaging surfaces are a minimum.

It is also ofsomeimportance in the art of scale-making, especially those of the so called springless variety, that. a construction be produced which may be supplied at low cost in order to meet the growing competition, such low cost,- however, not being obtained at the expense of accuracy or adjustability.

Reference is to be had to the accompany ing drawings, forming part of this specification, in which similar characters of reference denote corres onding parts in all the views, and in whic 'Figure l is a plan View of the platform frame showing the arrangement of the parts; Fig.- 2.is a vertical sectional view on the. line 2 2. o-fFig. 1; Fig. 3 is'a. sectional Sectional view onthe line JP- i of Fig. 1;

Fig. 5 is a sectional View on the line 55 of Fig. 3; Fig. 6 is a sectional view on the line 66 of Fig. 3; Fig. 7 is a sectional view on the line 77 of Fig. 6; Fig. 8 is a sectional view on the line 8-8 of Fig. 2.

In describingv the particular embodiment shape, and form, aswell as the choice of materials in making. the separate parts are largely matters of skill and may be determined in any instance by a person skilled in the art. V 4

Generally speaking, the construction involves a base 1 of any desired form and shape, preferably-provided with supports 2,

one end portion of the base being closed by a top 3 having an opening 4 therein, this i top 3' carrying a-vertical-ly extending hollow shaft 5 within which the draft rod 6 leading to the indicating mechanism is housed. As

shown in the drawings, the parts mentioned,- as' well as those to be subsequently described,

are preferably made of' channel iron, the same being usedbecause. of the adaptability of such material to bending andshaping.

That portion of the base l beyond the top I 3 and toward the other end of the structure is left open and above this open portion is a metal frame 7, the shape of which preferably corresponds to the shape-of the base, the platform 8 being mounted on this frame 7, the combined structure being in coiiperative relation with the saiddraft rod. 6'- by means of the levers and mountings to be presently described.

' Referring particularly to. Fig. 1, it will be noted that the structure com-prises what may be termeda longitudinally extending primary lever 9, movably mounted in position, and a plurality of secondary levers on op.- posite sides thereof, which secondary levers are shown as substantially triangular inoutline, although such con-formation is, of course, not arbitrary. Each secondary le ver comprises the three members 10, 11, 1 2, suitably held togetherin any desirable manner, as by means of rivets or screws 13. T It will be noted that the ends of the members view on the line of F1g.. 1; Fig. 4 is a 11, 12, engage the, member 10 remote from the ends, the end-s 1 1 of which memberlO are offset or bent andprovided with other offsets 15 removedfrom the offsets 14 and extending in an opposite direction. It will also be noted that the members 11, 12, do notcome together adjacent their ends but that the member 11 is extended for a suitable distance, as shown particularly in Fig. 4, the construction and cooperation of these extended ends being later set forth.

Referring particularly now to Figs. 5 and 6 in connection with Fig. 3, the particular manner of mounting the ends of the secondary levers in relation with the base 1 will be set forth. provided with a plurality of brackets 16, each bracket carrying a support 17 having a.

notch, or recess 18 in its upper face in whicha knife edge 19 carried by the end 14 of the member 10 is entered. This hearing or support 17, as indicated preferably in Fig. 7, is in the nature of a plate having recesses 20 extending inwardly fro-m its ends, which re cesses receive upstanding pins or lugs '21 carried bythe said bracket 16.. Thus it will be noted that while the bearing or support 17 is fixed with relation to the base 1, it is adjustably fixed in the sense that it may be moved to the best position in order to conveniently receive the knife edge 19 carried by the offset end 14 of the member 10. As shown particularly in Figs. 1 and 3, the other offset end 14 of the member 10 is mounted in a similar manner.

The second offset portions 15 of the member lO-which are adjacent the ends of this member are in pivotal relation with the structure which carries the platform 8, the arrangement being shown especially in Figs. 1, 4, and 5. Extending transversely of the frame 7 which carries the platform 8 and secured to the said frame is a beam 22, the beam having downwardly extending hangers 23 with notches 24 at the lower ends, the bottoms of the notches being provided with steel inserts 25 forming bearings for knife edges to be presently described.

Referring particularly to Fig. 5, it will be noted that the upper prtion of the offset 15 is provided with an upwardly extending knife edge 26 and that resting on this knife edge is a block or hearing 27 having a recess in its face, receiving the said knife edge, this bearing or block being carried in a frame 28 substantially rectangular in shape, the;

lower side 29 of which extends outwardly, forming arms 29 (Fig. 3) which arms are provided with knife edges 30 engaging in the before mentioned notches 24 in the lower end of the hangers 23. It is clear from the drawings that the other offset portion 15 ad jacent the other end of the member 10 is mounted in a manner similar to what has just been described. To this end, it will be noted from Fig. 1 that the frame 7 which carries the platform 8 is provided with a The inside of the base 1 is fulcrums of which are the knlfe edge support 17, 19, adjacent the offset ends 14, the

points of application of the load being the knife edge supports 26, 27, engaging the off"- .sets 15, the moment due to the application of the load to the lever being transmitted to the primary lever 9 in varying amounts, depending on the load, the manner of mounting the adjacent ends of the members 11 being now set forth.

Referring particularly to Figs. 2 and 4, it will be noted that the primary lever 9 has suitable masses of material 31 adju'stably secured adjacent one end, the other end of the lever being provided on its under side with a fixed knife edge 32 hearing in a suitable support 33, carried by the lower portion 34 of a frame 35, the upper end of which is provided with a knife edge 36 in engagement with the lower hooked end 37 of the said draft rod 6. Extending transversely of the lower portion of the base are fixed elements 38. Bridging these fixed elements are beams 39 provided with slots 40; on top of each of the beams 39 is a suit-able support 41 having an extended base with openings therein through which bolts 42 pass, these bolts engaging in the said slot 40 and serving to fix the position of the support 41 relatively to the beam 39. The upper portion of each support 41 is provided with a bearing 43 having a notch in its upper side adapted to co-act with knife edges 43 carried by the under side of a substantially U- shaped frame 44.

Referring particularly to Fig. 8, it will be noted that extending transversely of the primary lever 9 is an adjustable element 45 having a yoke 46 extending downwardly there from which embraces the said lever 9, th( element 45 being adjustable with respect to the lever 9 and being held in position by tightening of the set screw 47.

Referring now to Fig. 1, it will be noted that the opposite side portions of the element 45 are provided with slots 48 and that the said U-shaped frames 44 are adjustably mounted on this element 45, engaging therewith through the medium of the said slots 48, permanent relation of the parts being maintained by means of the set screws 49. This fulcrum of the primar lever 9 is adjustable; in fact, the fulcrums on opposite sides of the said lever may be independently adjusted, due to the provision of the U- shaped frames and the slotted element co operating with these frames.

In order to transmit the load carried by the platform to this primary lever through the medium of the said secondary levers already described, knife edge mountings, substantially of the following construction, are availed of. Referring particularly to Figs. 2 and 4, it will be noted that the adjacent ends 11 of the members 11 of the secondary levers are provided with downwardly extending knife edges 50. It will also be noted that the said primary lever 9 is provided with a transversely extending element 51 having a plurality of notched bearings 52 carried thereby; a plurality of substantially rectangular frames 53, the upper p01- tions 54 of which constitute knife edges and spect to the base but still not enough to derange the relation of the movable parts, a number of links 57 (Fig. 1) are made use of, one end of each of which is secured to the base of the scales at 58, the other end being provided with a slot 59 receiving an upstanding pin 60 positioned at the outer end of an offset 61 carried by the said beam 22 secured to the platform frame.

From a description of the structure and operation set forth, it is believed that the co-action of the parts will be apparent.

Any load placed on the platform will move the secondary levers through a certain angle, the movement of these levers being in turn imparted to the primary lever, movement of which is opposed because of the masses of material 31 carried adjacent one end thereof, the primary lever swinging about its fulcrum and actuating the draft rod 6, whereby the weight of the material on the platform is transmitted to the indicating mechanism.

It will be apparent that the movement of the end of the primary lever which actuates the draft rod will depend upon the distance between the fulcrum of the said lever and the point at which the load is transferred thereto from the secondary levers. This idistance may be varied at will by means of the construction shown, a most precise position being obtainable by reason of the independent adjustment of parts on. opposite sides of this primary lever which have been particularly described.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent 1. A scale comprising a base, a primary "lever, a plurality of independently adjustable supports between the lever and the said base, means-whereby a. draft rod may be between the platform and each of the said connected to the said lever, a plurality of secondary levers on opposite sides of the primary lever, a plurality of pivotal supporting means between the secondary levers and the base, pivotal mounting means between the secondary levers and the said primary lever and positioned between one end of the said. lever and the said supporting means, a platform, and a plurality of pivotal supporting means between the platform and the said secondary levers.

2. A scale comprising a base, a primary lever a plurality of independently adjustable knife edges between the said lever and the base, a plurality of secondary levers, each secondary lever comprising a framework, a plurality of knife-edges carried by each secondary lever and engaging the said base, a platform, a plurality of knife edges secondary levers, and a. plurality of knife edges between the said secondary levers and the said primary lever.

3. A scale comprising a base, a primary lever pivotally carried thereby, the pivotal mounting comprising a lurality of independently adjustable kni e edges, the said primary lever being provided with means whereby it may be connected to a draft rod, the said primary lever being also provided with a mass of material adjustably mounted in position, the said pivotal mounting of the lever being intermediate the point of application of the draft rod and the said mass of material, a plurality of independ- 1 ent secondary levers, knife edges between the secondary levers and the base, and other knife edges between the secondary levers and the primary lever and engaging the primary lever between the pivotal mounting thereof and the point of application of the said draft rod.

4. The improved means for adjustably mounting a lever in position in the base of a scales,'co m rising an element extending to opposite si es of the lever and adjustably secured thereto, a plurality of supports carried by the base, a plurality of U-shaped frames carried by the said element, the said frames being provided with knife edges engaging the said supports, each of the supports in each of the frames carrying the knife edges being independently adjustable.

5. A scale comprising a base, a primary lever, adjustable knife edges for supporting the lever on the base, secondary levers, knife edges for supporting the secondary levers on the base, a platform, knife edges for supporting the platform on the said secondary levers, and knife edges between the said secondary levers and the said primary lever.

6. A scale comprising abase, a primary lever movably supported thereby, the supporting means comprising adjustable knife edges, the primary lever being adapted to be i connected to a draft rod, secondary levers on opposite sides of the primary lever, knife edges for supporting the secondary levers on thefbase, and knife edges between the sec-' ondary levers and the primar lever, whereby movement of the secon ary levers is transmitted to the primary lever and thence to the draft rod.

7. A scale comprising a base, a primary lever, secondary levers associated with said primary lever, means for adjusting said primary lever in position on said base, said means comprising journal members carried by the primary lever and extending transversely thereof, said journal members being adjustably secured to the primary lever, supports adjnstably secured to the base, means for supporting said secondary levers on said 8. In a scale, the combination of a base, a

primary lever, secondary levers, the said secondary levers being substantially trianv gular in form, knife edge supports adjacent the corners of the secondary levers, a plurality of said knife edge supports engaging the base, the other knife edge su port engaging the primary lever, a plat em, and means whereby the platform may be movably associated with the said secondary levers;

9. The herein described means for adjustably mounting a lever in position in a scale, comprising an element extending transversely of the lever and movably secured thereto, supports carried by the base of the scale, and frames carried by the said element, the frames being provided with adjustable knife edges engaging the said supports.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ISRAEL CHARET.

Witnesses:

ALLEN MCKENZIE, LAURENCE J. GALLAGHER,

Copies of this patent may be obtained for five cents each, by addressing the commissioner of rifle, Washington, D. G. 

